Disaster Preparedness Expo, 10 a.m.-4 p.m., Brand Boulevard (between First & Third streets), San Fernando. History of World War II Air Mail and Air Mail Stamps event, 11 a.m., Commemorative Air Force WW II Aviation Museum, Camarillo Airport, 455 Aviation Drive, Camarillo. Donation voluntary. Call (805) 482-0064. Mail Datebook entries – including time, date, location and phone number – to Daily News City Desk, P.O. Box 4200, Woodland Hills, CA 91365; fax (818) 713-0058; e-mail [email protected] local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set! AD Quality Auto 360p 720p 1080p Top articles1/5READ MOREOregon Ducks football players get stuck on Disney ride during Rose Bowl eventPlant Propagation Workshop, 9:30-11:30 a.m., Soka University Botanical Research Center and Nursery, 26800 W. Mulholland Highway, Calabasas. Call (818) 878-3741. “Cuboree,” an opportunity to join the Cub Scouts, 9:30 a.m.-4 p.m., Veterans Memorial County Park, 13000 Sayre St., Sylmar. Earth Walk LA, 10 a.m., Los Angeles Pierce College, 6201 Winnetka Ave., Woodland Hills. Call (213) 593-8010. Ride-On, a therapeutic horsemanship event, 10 a.m.-2 p.m., 21126 Chatsworth St., Chatsworth. Free. Call (818) 700-2971. Earth Day Expo 2006, 10 a.m.-4 p.m., Los Angeles Zoo, Griffith Park, intersection of the Ventura and Golden State freeways, Los Angeles. Call (323) 644-4200. SATURDAY Unveiling of Serenity Garden, 9 a.m.-12:30 p.m., Grant High School, 13000 Oxnard St., Valley Glen. Child Labor film screening/panel discussion, 9 a.m.-2:30 p.m., Northridge Center, University Student Union, California State University, Northridge, 18111 Nordhoff St. Call (818) 677-3385. Book sale, Valencia Library, 23743 Valencia Blvd., Valencia. Call (661) 259-3681.